Air-admission-control device for internal-combustion engines on motor driven vehicles



Nov. 29, 1927. v R 1,650,587

' I V. ALDER AIR ADMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINES ON MOTOR DRIVEN VEHICLES Filed March 9. 1925 Im en for; Werner Alder v v .flttornev Patented Nov. 29,. 1927.

vnanonennna, orennnnnflfrcroaia, aosrsianrar DRIVEN vnirronns;

A neanmi filed March e; m sses No. 93,457, andXin Austrzilia fMarch 18, 19 a -1 The present lIlVGHiZlODl'EIiiGi'S to devices for controlling air admissiolrito'the cylinders of an internal combustion.engine-constituting the power unit ina motor. drivenavehicle and has been clev'ised to provide device for that pnrposewhich while capable of El iectively pert rn ing their-motions of exist,- ing devices is alsoadapjtedto prevent unauthorized starting ofthe'engine. j

Briefly stated the essential i eatureol the invention resides in a valvnlar arrangement controlling admission of a to the engine cylinders, wherein the valve setting can be locked in such apositionthae hie carbnrctted mixture is so diluted, witl1 air that it is incapable of being ignited. e

in one practical form of such a valvular arrangement the valve niecha ism comprises a. pair of rotary valveseach separately operable to control one of a pair of air ports and both of which valves mnstbe brought into a predetermined registration to close both ports before the enginecan be started. The setting of such registration can conveniently be controlled by a pair of aligned discs bear-' mg a circumferential series of numerals, letters or markings, which must be brought into a predetermined order before the setting mentioned can be effected. Each of said discs controls the operation of one of said valves, as by means of an extended spindle on each of the latter to which spindles said discs are secured.

The accompanying drawings illustrate a practical application of the invention.

lln these drawings Fig. 1 is a side elevation of a practical form of the device shown fitted on the instrument board of a motor driven vehicle. r

Fig. 2 is an enlarged vertical longitudinal central section of the device and Figs. 3 and 4 are transverse sections on lines IIIIII and IVlV respectively in Fig. 2. i

The valve casing 5 and associated air chamber 6 are in communication through ports 7 and 9 controlled by the rotary valves 8 and 10 respectively.

The air chamber 6 is placed in communication with the inlet manifold 11 (shown in dotted lines in Fig. l) by any suitable conductor as for example the flexible tube 12 having a terminal union and fitting -13 of any. suitable type and the uncoupling of which latter from-its union maybe, guarded against; by welding or soldering.

Each of the rotary valves,8;and 10 is made up of a pair of apertured discs 1% having. common boss 15'thesb1'idging portion lo between said discshaving an-area .snffi cient to completelycover the ports 7 and9 and for line adjustmentof ,thepassage of airtosaid ports the transverse edges 17 of l portion 16 converge as shown.

The

boss 15 of the valve 8 is steppejdqas shown in L 2, and is integral withythe hollow spin die .18 while the boss of {thewalve v10. is integralwith thefspindle 19-.w hich passes through said hollow spindle 18 and extends beyond the outer end of the latter. An, enlar 'ed cylindricalportion20 is formed on the spindle 19 to act aswabearing support for the rotary valve 8 and the rear .end, oil. the said spindle 19 enters a beari w ecess in the rear end 21 of the valve casing 5, which cild isslotted at 22 for the passage of air into the casing 5. The forward end o f the casing 5 is fitted with an apertured cap member 23 having an internally threaded boss 24; and inwardly projecting flange 25 acting as a bearing support for the forward cylindrical portion of the boss 15 ot' the rotary valve 8. i

Into the boss 241 of said cap 23 is screwed the hollow stem 26 of a disc 27 centrally apertured for the free passage there-through of the hollow spindle 18 of the rotaryvalve 8. A washer 28 and a clamping nut 29 on the stem 26 are provided for securing the device to the instrument board 30. vDiscsll and 32 are respectively attached to the spindles 19 and 18 respectively of the valves 10 and 8 respectively, said discs be ing retained against longitudinal movement by the screw 33. The'discs 31 and 32 are employed for imparting rotary motion to the valves 10 and 8, and are preferably attaehed to the spindles by keys 3 1 (see Fig. 3) which engage any diametrically opposite pair of the longitudinally disposed recesses 35 in said spindles."

The discs 31 and 32 are provided witha peripheral series of numerals as shown in Fig. 3 or other markings, as: may also'the periphery of the disc 27- Which latter is not however essential, it being necessary for engine starting purposes to set certain of the numbers parallel with the axis of the spindles 18 and 19, in a predetermined alignmentdetermined according to the positions of the valve bridging portions 16 and the ports 7 and 9 when covering the latterand also in alignment with a fixed marking as for instance one of the numbers .on the fixed disc 27. The ports 7 and 9 being covered against admission of air to the air chamber 6 and the engine running, one or other of the valves 8 and 10 can be adjusted to provideiamy slight additional air considered necessary for more efiicient running of the engine while the remaining valve can be'used at any "time required for engine braking purposes whichlatter can if necessary be increased to its full extent by opening up both of the valves to the fullest extent. As previously stated the valve convice is adapted, in addition to the functions 1 of admitting limited quantities of extra air to the combustible fuel mixture and large quantities for engine braking purposes, for use in preventing the engine being started by any unauthorized person unacquainted with the key position of the discs 31 and 32. Y

It is of course evident that more than two of the valves 8 and 10 can be used with an additional disc for operating each further valve and a predetermined setting required of all of the same for engine starting purposes.

mosphere, a plurality of air ports in the chamber casing leading into the engine manifold, a plurality of axial ali ned rotary air valves of cylindrical form in the valve chamber and spaced from each other in an axial direction, the rotary air valves being each formed of a. pair of axially aligned discs having a common boss and a bridging portion between said discs of sufiicient area to cover completely the respective air port, and spindles for the respective valves extending outside the valve chamber and having at their outer ends circumferentially marked permutation discs for moving the spindles and the valves attached thereto into various relative predetermined positions for regulating the quantity of air admitted by the said ports. 1

Dated this eighth day of February, 1926.

VERNOR ALDER. 

